ORDER XLIV. ROSACEA. 307 



Small corymbs. Calyx pubescent ; segments incised or serrate. Fruit 

 oval, large, red, 5-seeded. — A'hite. ^ . April. In sandy soils. 8 — 12 

 feet Summer Haw. 



14. 0. parvifo'lia, (Ait.) A spiny shrub, much branched ; branches 

 geniculate and divaricate ; young branches tomentose; spines numer- 

 ous, long and slender. Leaves obovate, deeply serrate, entire at the 

 base, tomentose. Flowers generally solitary, terminal. Calyx tomen- 

 tose ; segments lanceolate, incised, foliaceous, with 2 or 3 bracts at the 

 base. Styles 5. Fruit large, greenish yellow, eatable. — White. ^ . 

 April — May. Dry soils. Common. 3 — 6 ft. Winter Haw. 



Genus XVI.— PY'RUS. L. 11—5. 

 (The Celtic name for Pear.) 



Calyx 5-cleft, tube urceolate or campanulatc. Petals 5, 

 nearly round. Styles usually 5. Fruit a fleshy pome, inde- 

 hiscent Carpels 2 — 5. Seeds 2 in each carpel. Trees or 

 shrubs. Leaves simple. 



1. P. corona'ria, (L.) A small tree, with spreading branches. Leaves 

 large, broad oval or ovate, sometimes sub-cordate, irregularly serrate, 

 smooth. Flowers in large terminal corymbs, fragrant. Petals some- 

 what unguiculate. Fruit globose, depressed ; disagreeable to the taste. 

 — Rose-colored. ^ . April. Common. 10 — 20 ft. Crab Apple. 



2. P. angcstifo'lia, (Ait.) A small tree, resembling the preceding. 

 Leaves oblong-lanceolate, acute at the base, dentate or nearly entire, 

 glabrous, shining above. Flowers in corymbs. Fruit small. — White. 

 t? . March — April. In rich soils. 10 — 20 feet. 



3. P. erythrocar'pa. (T. <fc G.) (Aronia arbutifolia of Elliott.) A 

 shrub sparingly branched, unarmed. Leaves obovate, acuminate, some- 

 times lanceolate, crenate, dentate, tomentose underneath when young. 

 Flower* in terminal corymbs. Calyx campanulate, with erect, acute, 

 glandular segments. Petals nearly round. Stamens numerous. Fruit 

 small, red. — White or rose-color. T <> . March — April. Common in 

 damp soils. 3 — 8 feet. 



This genus affords some of our most important fruits. The Pyrus communis is the 

 Pear ; "the Pyrus mains is the Apple; the Pyrus cydonia is the Quince; and the 

 Pyrus prunifolia is the Siberian Crab. 



Genus XYIL— AMELAXCHIER, Medic. 11—5. 



(The Savoy name of the Medlar.) 



Calyx 5-cleft. Petals 5, obovate, oblong. Stamens numer- 

 ous, short. Styles 5, more or'less united; pome 5 — 10-celled ; 

 cells 1 — 2-seeded ; endocarp cartilaginous. Small trees or 

 shrubs, with simple leaves. 



i. A. botrya'pium, (T. & G.) (Aronia botryapiurn of Ell.) A small 

 tree. Leaves cordate or ovate, oblong, serrate, tomentose when young, 

 glabrous when mature. Flov:ers in racemes. Petals oblong or linear- 

 is ents of the calyx glabrous, short. Styles pubescent 

 at the base. Fruit red, eatable. — White. ^ . Feb. — March. Common. 

 10 — 1 2 fee t. Shad Flower. 



